Hi MPS,
we are very interested in the MP5493 to integrate in our power solution.
- I can’t find an Evaluation Board for the MP5493. Is it available on request only?
To support our evaluation, we would greatly appreciate a complimentary evaluation board. If required, we are happy to work with a German distributor such as Endrich or Codico for production orders.
We have already purchased some sample parts in case that there is no evaluation board available.
If the device proves suitable for our application, we anticipate annual production volumes of approximately 10,000 units.
Questions to Discharging/Boost Mode
- From the datasheet a 3.3V / 0.6A Output is shown on page 12. We would need 5V / 0.5A
- What will be the max. output current for 5V output?
- Is the output under this max. current conditions stable until ~1,2V SuperCap voltage (minimum feedback voltage). Could this be improved to reach a lower minimum discharge voltage e.g. ~0,7V
Questions to Charging Mode
- The maximum charging current is quite low. Is there any extra circuit possilbe to increase it? I’m thinking about to place in parallel a current source, limited to voltage below 2.65V, decoupled with the use of a diode to the Vout2 (charger output). It’s just an quick idea… for sure not as easy to be done…
Application Needs
We have an input voltage delivered from a buck-converter in first stage, due to an input voltage that may reach 60V..
After the buck, the MP5493 should now ouput the 5V / 0.25A (stable) system voltage. If a higher power output would be achievable it is welcome (0.6A would be great).
I prefer not to discuss the intended end application in detail in this public forum, but would be happy to get a direct email conversation to an field application engineer that could assist to find the best solution for our needs.
Thanks for your response in advance.
Christian
Hello Christian,
To receive an evaluation board for the MP5493 and since you are anticipating a high volume of units, I think it would be best to contact a local sales counterpart directly. Please submit a ticket to take care of both those items:
Contact MPS - Quoting and Product Availability
As for your other questions, I will look into this and come back with answers.
Best,
Krishan
Thank you, I have contacted Endrich Bauelemente Vertriebs GmbH in Germany for Samles/Evalboard support.
Looking forward to receive more information, ideas and alternative solutions from you.
Thank you,
Christian
Hello again Christian,
I will now answer your questions regarding the discharging boost mode:
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The MP5493 should be capable of 5Vout with a load current of 0.5A. We have a typical application circuit that can be shown here:
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For a 5V output, the maximum current achievable at the output would be 0.6A. Please see the following efficiency and load regulation curves:
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According to the recommended operating conditions as outlined in the datasheet, the minimum regulated voltage for the supercapacitor output here would be 1.2V as shown:
Is it possible for you to adjust your minimum and maximum ranges of your supercapacitor?
Regarding the increase of the charging mode current, do you have a rough schematic to show how exactly this would be implemented? If the proper steps to test this where the IC would be protected, then perhaps this would be worth testing with an EVB.
Please ask the contact that you have submitted a ticket with about the eval board here such that you can test this further.
Finally, regarding your application needs, please submit that ticket to receive localized and direct FAE support.
If you have any additional questions, feel free to ask them here.
Best,
Krishan
Thanks so far for the clarifications.
I was stucked on other projects, so I could not move forward here.
No schematics available, I just made brainstorming so far.
Unfortunately, Endrich is still listed but not anymore part of the distribution network. Need now to contact another and will try to solve than all question marks via distribution.
Thank you,
Christian
